US20140370738A1 - Plug-in wire connection terminal structure - Google Patents
Plug-in wire connection terminal structure Download PDFInfo
- Publication number
- US20140370738A1 US20140370738A1 US14/473,002 US201414473002A US2014370738A1 US 20140370738 A1 US20140370738 A1 US 20140370738A1 US 201414473002 A US201414473002 A US 201414473002A US 2014370738 A1 US2014370738 A1 US 2014370738A1
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- United States
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- section
- plug
- connection terminal
- terminal structure
- wire connection
- Prior art date
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- 238000009413 insulation Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 description 19
- 239000002184 metal Substances 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 18
- 229910000639 Spring steel Inorganic materials 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
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- 239000000463 material Substances 0.000 description 5
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- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
- H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
- H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
- H01R4/4821—Single-blade spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
- H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/4846—Busbar details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/484—Spring housing details
- H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
Definitions
- the present invention relates generally to a plug-in wire connection terminal structure, and more particularly to a plug-in wire connection terminal structure, which has simplified structure and is easy to assemble. Moreover, the plug-in wire connection terminal structure has excellent structural strength and is able to provide excellent elastic holding effect.
- Chinese Invention Patent Publication No. CN 101595603A discloses an electrical wire connection terminal.
- the terminal has an insulation housing, a metal piece disposed in the housing and a leaf spring disposed in the housing.
- the metal piece is made of high-conductivity metal material and the leaf spring has highly stable elasticity.
- the metal piece is assembled with the leaf spring to forma conduction circuit for conducting large current.
- the metal piece has a connection plate. Two sides of the connection plate are bent to form a latch arm and a contact arm respectively.
- a plug section and a fixing section respectively extend from two end sections of the contact arm.
- a fixing section corresponding to the plug section extends from one side of the latch arm opposite to the plug section.
- a locking protrusion section is disposed on the fixing section and stopper sections are disposed on two sides of the fixing section.
- the middle section of the leaf spring is formed with a bight section.
- One side of the bight section is formed with an outward protruding latch section, which is correspondingly latched with the fixing section of the metal piece.
- a support arm further extends from the bight section for more securely latching with the metal piece.
- the support arm is formed with a hollow. An electrical conductor to be connected can be passed through the hollow. Then the fixing section of the metal piece is fitted and latched with the rear end of the support arm. Moreover, the latch section is formed with a hole.
- the other side of the leaf spring is formed with a clamping arm.
- the end of the clamping arm extends through the hollow of the support arm to abut against the inner face of the contact arm so as to conveniently connect with the electrical conductor to be connected.
- the latch section of the leaf spring and the rear end of the contact arm are inserted with the fixing section of the metal piece.
- the latch section of the leaf spring is inserted between the fixing section of the metal piece and the stopper sections.
- the locking protrusion section is inserted into the corresponding hole, whereby the leaf spring can be securely connected with the metal piece with the end section of the clamping arm abutting against the contact arm.
- the insulation housing is formed with a conductor inlet and an operation hole corresponding to the hollow of the leaf spring.
- the operation hole is positioned above the conductor inlet.
- An electrical conductor can extend into the conductor inlet to upward push the clamping arm, whereby the end section of the clamping arm can obliquely abut against the electrical conductor to hold and prevent the electrical conductor from being reversely pulled out. Accordingly, the electrical conductor can keep in tight electrical contact with the contact arm of the metal piece.
- the plug section can be electrically plugged into an external corresponding socket.
- An operation tool (such as a screwdriver) can extend into the operation hole to shift the clamping arm and separate the end section of the clamping arm from the electrical conductor. Under such circumstance, the electrical conductor can be reversely pulled out of the conductor inlet and separated from the metal piece.
- FIG. 201112705Y discloses a plug-in wire connection terminal.
- the terminal includes a pin-shaped plug-in terminal (metal plug-in terminal) and a pin-shaped socket member (metal connection socket member).
- the pin-shaped socket member has a through hole for receiving the pin-shaped plug-in terminal. At least one split is formed on the annular wall of the pin-shaped socket member, whereby the through hole is expandable.
- the outer wall of the middle section of the pin-shaped socket member is formed with an annular recessed section for a spring steel collar to fit around the pin-shaped socket member. By means of the elasticity of the spring steel collar, the through hole is fully elastically bound to have a sufficient structural strength. Accordingly, it is ensured that the pin-shaped plug-in terminal is lastingly tightly enclosed in the pin-shaped socket member.
- Chinese Utility Patent Publication No. CN 201038406Y discloses a power connector terminal structure including a female terminal in which a male terminal can be electrically plugged.
- the female terminal is composed of a main body and an outer housing.
- the main body is formed with a locating section, which can be fixedly disposed in a preset insulation seat body.
- a welding section is disposed on one side of the locating section.
- the welding section can extend through the insulation seat body to outer side thereof.
- the other side of the locating section distal from the welding section is formed with a mating section.
- the mating section has at least one axially extending split.
- an annular groove is formed on outer circumference of the mating section for the outer housing to fit thereon.
- a restriction section is disposed on one side of one end of the outer housing.
- the restriction section can be inserted in the split to provide a fixing effect for preventing the outer housing from axially rotating on the surface of the annular groove.
- the outer housing permits the mating section to elastically expand without over-stretching. Accordingly, a true locating effect is achieved to keep a good electrical connection.
- the outer circumference of the middle section of the pin-shaped socket member (or the female terminal) is formed with an annular recess (annular groove) for fitting a spring steel collar (outer housing) around the outer circumference.
- the conventional structures have the following shortcomings:
- the plug-in wire connection terminal structure of the present invention includes: a main body having an internal receiving space, lateral sides of the receiving space being respectively formed with an arched guide slot in communication with the receiving space and a stopper block; a holding plate having a receiving section in the middle, the receiving section being positioned in the receiving space of the main body, lateral sides of the receiving section being respectively formed with a wire entrance and a conductive contact section in which an external member can be conductively plugged, a connection section being further disposed on the receiving section, the connection section extending to the arched guide slot; and a leaf spring having a bight section in the middle, the bight section being received in the arched guide slot of the main body, a connected section being disposed at one end of the bight section, the connected section being detachably latched with (or hooked with) the connection section of the holding plate, the stopper block being cooperatively engaged with the connected section, whereby the holding plate and the leaf spring are securely connected with each other without easy
- a conductive contact section extends from the holding plate.
- the conductive contact section is formed with a socket.
- An annular wall of the socket is formed with at least one slit.
- a fitting section is disposed at one end of the conductive contact section, which end is distal from the receiving section.
- the fitting section extends from outer circumference of the end of the conductive contact section.
- a collar section of a collar member is correspondingly fitted on the fitting section and secured to the fitting section.
- FIG. 1 is a perspective exploded view of a first embodiment of the present invention
- FIG. 2 is a perspective partially assembled view of the first embodiment of the present invention
- FIG. 3 is also a perspective partially assembled view of the first embodiment of the present invention.
- FIG. 4 is a perspective assembled view of the first embodiment of the present invention.
- FIG. 5 is a sectional assembled view of the first embodiment of the present invention, showing that a wire is inserted into the terminal of the present invention
- FIG. 6 is a sectional assembled view according to FIG. 5 , showing that a tool is extended into the terminal to release the wire;
- FIG. 7 is a sectional view showing that a plug member is plugged into the conductive contact section of the present invention.
- FIG. 8 is a perspective exploded view of a second embodiment of the present invention.
- the plug-in wire connection terminal structure of the present invention includes a main body 1 , a holding plate 2 , a leaf spring 3 and a collar member 4 .
- the main body 1 is composed of an insulation casing 11 and an insulation cover 12 mated with the insulation casing 11 .
- the insulation casing 11 has an internal receiving space 13 .
- the lateral sides of the receiving space 13 are respectively formed with a wire inlet 131 in communication with outer side, a channel 132 and a side section 14 having an arched inner face 141 .
- the channel 132 communicates with the outer side via an opening 133 .
- a stopper block 17 is disposed between the side section 14 and the receiving space 13 .
- One side of the stopper block 17 which side faces the side section 14 , is recessed to form a locating section 171 .
- a shift perforation 134 in communication with the outer side is disposed between the side section 14 and the wire inlet 131 .
- a middle protrusion block 15 is disposed on the insulation cover 12 in a position corresponding to the interior of the side section 14 .
- the middle protrusion block 15 has an arched outer face 151 corresponding to the arched inner face 141 .
- the holding plate 2 has a receiving section 21 in the middle.
- the receiving section 21 is positioned in the receiving space 13 of the main body 1 .
- the lateral sides of the receiving section 21 are respectively formed with a wire entrance 211 corresponding to the wire inlet 131 and a conductive contact section 22 received in the channel 132 .
- the conductive contact section 22 is formed with a socket 221 in a position corresponding to the opening 133 .
- a fitting section 227 is disposed at one end of the conductive contact section 22 , which end is distal from the receiving section 21 .
- the fitting section 227 extends from outer circumference of the end of the conductive contact section 22 in a direction away from the middle of the holding plate 2 .
- the fitting section 227 has an outer diameter smaller than that of the other part of the conductive contact section 22 .
- An annular stopper flange 226 is disposed at one end of the fitting section 227 , which end is proximal to the receiving section 21 .
- the annular wall of the conductive contact section 22 is further formed with at least one split 225 in communication with the outer side and a slit 222 .
- a middle section of the slit 222 (or the split 225 ) is formed with an expansion fissure 223 with a larger gap.
- a shoulder section 224 is formed at the junction between the expansion fissure 223 and the slit 222 (or the split 225 ).
- the lateral side of the receiving section 21 of the holding plate 2 is connected with a connection section 24 directed to the arched guide slot 16 .
- the connection section 24 is a bent hook section 241 formed with a receiving hollow 242 .
- a plane support section 243 outward extends from a lateral side of the receiving hollow 242 , which lateral side is proximal to the hook section 241 .
- one side of the wire entrance 211 of the receiving section 21 opposite to the connection section 24 is formed with an outward biased guide edge 212 .
- a wire 6 can be passed through the wire inlet 131 to extend into the wire entrance 211 . Therefore, the guide edge 212 serves to guide the wire 6 into the receiving section 21 .
- the leaf spring 3 has a bight section 31 in the middle.
- the bight section 31 is received in the arched guide slot 16 of the main body 1 .
- a connected section 32 is disposed at one end of the bight section 31 .
- the connected section 32 has two protruding abutment sections 321 formed on two sides of the end section.
- a neck section 322 is formed between the abutment sections 321 and the bight section 31 .
- the neck section 322 has a width smaller than that of the receiving hollow 242 .
- the abutment sections 321 are extended into the receiving hollow 242 of the holding plate 2 and stopped by the hook section 241 .
- An end face of the connected section 32 is inlaid in the locating section 171 , whereby the holding plate 2 and the leaf spring 3 are securely connected with each other without easy detachment.
- the neck section 322 is rested on the support section 243 , which restricts the connected section 32 from clockwise loosening.
- the bight section 31 of the leaf spring 3 is prevented from rotating or sliding within the arched guide slot 16 .
- an abutment end 331 is connected with the other end of the bight section 31 via an oblique elastic arm 33 .
- the oblique elastic arm 33 can pass through one side of the shift perforation 134 to obliquely extend toward the receiving section 21 .
- the oblique elastic arm 33 has such a length that the abutment end 331 is just kept in the receiving section 21 inside the guide edge 212 .
- the guide edge 212 is outward biased so as to ensure that the abutment end 331 can enter the receiving section 21 in an insertion direction of the conductor section 61 of the wire 6 without being stopped outside.
- the bight section 31 is prevented from rotating or sliding within the arched guide slot 16 so that the oblique elastic arm 33 can be positioned in its true position. In this case, the positional relationship between the abutment end 331 , the receiving section 21 and the guide edge 212 can keep stable.
- the collar member 4 is a hollow tubular body with good rigidity and elasticity.
- the collar member 4 has a collar section 41 corresponding to the fitting section 227 .
- the annular wall of the collar section 41 is formed with at least one slit 42 in communication with the outer side.
- at least one locating section 43 is disposed on inner circumference of the collar member 4 .
- the locating section 43 protrudes from the inner circumference of the collar member 4 toward the conductive contact section 22 .
- One end of the locating section 43 is formed with a tapered section 431 .
- multiple outward expanded push sections 44 extend from the circumference of one end of the collar member 4 .
- the connected section 32 of the leaf spring 3 is connected with the connection section 24 of the holding plate 2 .
- the holding plate 2 is placed into the receiving space 13 of the main body 1 with the bight section 31 of the leaf spring 3 positioned in the arched guide slot 16 .
- the conductive contact section 22 is positioned in the channel 132 with the socket 221 aligned with the opening 133 .
- the collar member 4 is fitted onto the outer circumference of the fitting section 227 from the end of the conductive contact section 22 , which end is distal from the receiving section 21 .
- the end of the locating section 43 with the tapered section 431 is slid along the slit 222 (or the split 225 ).
- the push sections 44 facilitate forcedly pushing the collar member 4 .
- the push sections 44 are pushed to the position of the stopper flange 226 , the collar member 4 is stopped from sliding. Moreover, at this time, the push sections 44 are in oblique contact with the stopper flange 226 so that a slight reaction push force is created. Under such circumstance, when the locating section 43 is engaged with the shoulder section 224 , under the reaction push force, the locating section 43 is axially double engaged between the stopper flange 226 and the shoulder section 224 . In this case, axial loosening between the connected collar member 4 and the conductive contact section 22 (the fitting section 227 ) can be eliminated.
- the collar member 4 is prevented from loosening.
- the collar member 4 is made of a material with very good rigidity so that the collar member 4 with the slit 42 has excellent elasticity. This can enhance the elastic holding effect of the socket 221 .
- the conductor section 61 of the stripped wire 6 is passed through the wire inlet 131 and the wire entrance 211 to push the oblique elastic arm 33 of the leaf spring 3 .
- the oblique elastic arm 33 is elastically biased, whereby the conductor section 61 can continuously extend into the receiving section 21 of the holding plate 2 .
- the oblique elastic arm 33 serves to abut against the conductor section 61 to provide a resistance for the conductor section 61 against reverse pullout of the conductor section 61 . Under such circumstance, the wire 6 is prevented from outward loosening after assembled.
- a tool 5 (such as a screwdriver) can be extended into the shift perforation 134 to push and deflect the oblique elastic arm 33 so as to release the conductor section 61 .
- the wire 6 can be outward extracted.
- a pin-shaped conductive plug member 60 can be plugged into the socket 221 of the holding plate 2 .
- a greater elastic holding force is applied to the conductive contact section 22 (the fitting section 227 ), whereby the conductive contact section 22 is in good contact with the plug member 60 .
- the holding plate 2 is the major conductive component for mating with the plug member. Therefore, the holding plate 2 is made of high-conductivity material. In addition, the holding plate 2 is coated with a silver coating with highest conductivity for more stabilizing the current.
- the other components such as the leaf spring 3 are made of stainless steel 301 by means of vacuum stereotyping to enhance the stability of elasticity and minimize the possibility of oxidization. Also, the holding plate 2 and the leaf spring 3 have highly simplified configuration and structure.
- the leaf spring 3 and the holding plate 2 can be easily assembled by means of very simple steps so that the assembling cost is also lowered. Especially, the difficulty in bending process is greatly reduced so that the possibility of breakage is minimized.
- the plug-in wire connection terminal structure of the present invention includes a main body 1 , a holding plate 2 and a leaf spring 3 , which are identical to those of the first embodiment.
- the second embodiment further includes a collar member 40 also having a collar section 401 .
- the annular wall of the collar section 401 is formed with at least one slit 402 in communication with the outer side.
- at least one locating section 403 is disposed on inner circumference of the collar member 40 .
- the locating section 403 protrudes from the inner circumference of the collar member 40 .
- multiple raised/recessed stripes 404 are formed on outer circumference of the collar member 40 .
- the stripes 404 provide the frictional force necessary for the operation, whereby the collar member 40 can be easily pushed to assemble with the conductive contact section 22 (the fitting section 227 ).
- the connection relationship between the other parts of the collar member 40 and the holding plate 2 of the second embodiment is identical to that of the first embodiment. Also, the connection relationship between the main body 1 , the holding plate 2 and the leaf spring 3 is identical to that of the first embodiment and thus will not be repeatedly described hereinafter.
- the plug-in wire connection terminal structure of the present invention has simplified components and structure and is easy to assemble. Moreover, the plug-in wire connection terminal structure of the present invention is able to provide excellent elastic holding effect.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
- This application is being filed as a Continuation application of Ser. No. 13/644,449, filed Oct. 4, 2012, currently pending.
- 1. Field of the Invention
- The present invention relates generally to a plug-in wire connection terminal structure, and more particularly to a plug-in wire connection terminal structure, which has simplified structure and is easy to assemble. Moreover, the plug-in wire connection terminal structure has excellent structural strength and is able to provide excellent elastic holding effect.
- 2. Description of the Related Art
- There are various conventional large-current connectors. For example, Chinese Invention Patent Publication No. CN 101595603A discloses an electrical wire connection terminal. The terminal has an insulation housing, a metal piece disposed in the housing and a leaf spring disposed in the housing. The metal piece is made of high-conductivity metal material and the leaf spring has highly stable elasticity. The metal piece is assembled with the leaf spring to forma conduction circuit for conducting large current. The metal piece has a connection plate. Two sides of the connection plate are bent to form a latch arm and a contact arm respectively. A plug section and a fixing section respectively extend from two end sections of the contact arm. A fixing section corresponding to the plug section extends from one side of the latch arm opposite to the plug section. A locking protrusion section is disposed on the fixing section and stopper sections are disposed on two sides of the fixing section. The middle section of the leaf spring is formed with a bight section. One side of the bight section is formed with an outward protruding latch section, which is correspondingly latched with the fixing section of the metal piece. A support arm further extends from the bight section for more securely latching with the metal piece. The support arm is formed with a hollow. An electrical conductor to be connected can be passed through the hollow. Then the fixing section of the metal piece is fitted and latched with the rear end of the support arm. Moreover, the latch section is formed with a hole. The other side of the leaf spring is formed with a clamping arm. The end of the clamping arm extends through the hollow of the support arm to abut against the inner face of the contact arm so as to conveniently connect with the electrical conductor to be connected. When assembled, the latch section of the leaf spring and the rear end of the contact arm are inserted with the fixing section of the metal piece. The latch section of the leaf spring is inserted between the fixing section of the metal piece and the stopper sections. The locking protrusion section is inserted into the corresponding hole, whereby the leaf spring can be securely connected with the metal piece with the end section of the clamping arm abutting against the contact arm.
- In practice, the insulation housing is formed with a conductor inlet and an operation hole corresponding to the hollow of the leaf spring. The operation hole is positioned above the conductor inlet. An electrical conductor can extend into the conductor inlet to upward push the clamping arm, whereby the end section of the clamping arm can obliquely abut against the electrical conductor to hold and prevent the electrical conductor from being reversely pulled out. Accordingly, the electrical conductor can keep in tight electrical contact with the contact arm of the metal piece. The plug section can be electrically plugged into an external corresponding socket. An operation tool (such as a screwdriver) can extend into the operation hole to shift the clamping arm and separate the end section of the clamping arm from the electrical conductor. Under such circumstance, the electrical conductor can be reversely pulled out of the conductor inlet and separated from the metal piece.
- In practice, the above structure has the following shortcomings:
- 1. The leaf spring and the metal piece are designed with complicated configuration and structure so that the development and processing cost is higher. This will affect the competitive ability of the product due to higher price.
- 2. The leaf spring needs the support arm to be wound on and fixed with the metal piece at the same time for assembling therewith. In addition, the clamping arm needs to extend from the winding section of the support arm into abutment against the contact arm of the metal piece and further needs to pass through the hollow. Therefore, total length of the leaf spring or the metal piece is longer and it is necessary to use and cut off a mass of metal material to manufacture the leaf spring. As a result, the manufacturing cost can be hardly lowered as a whole. U.S. Pat. No. 8,262,422B1, U.S. Pat. No. 6,336,824B1 and U.S. Pat. No. 7,762,834B2 have similar shortcomings.
- 3. The support arm of the leaf spring is formed with a large hollow so that a mass of waste material is produced during the processing procedure. This obviously affects the strength of the support arm and fails to meet the principle of economic efficiency and structural design. U.S. Pat. No. 5,454,730 has similar problems.
- There also are various plug-in wire connection terminal structures. For example, Chinese Utility Patent Publication No. CN 201112705Y discloses a plug-in wire connection terminal. The terminal includes a pin-shaped plug-in terminal (metal plug-in terminal) and a pin-shaped socket member (metal connection socket member). The pin-shaped socket member has a through hole for receiving the pin-shaped plug-in terminal. At least one split is formed on the annular wall of the pin-shaped socket member, whereby the through hole is expandable. In addition, the outer wall of the middle section of the pin-shaped socket member is formed with an annular recessed section for a spring steel collar to fit around the pin-shaped socket member. By means of the elasticity of the spring steel collar, the through hole is fully elastically bound to have a sufficient structural strength. Accordingly, it is ensured that the pin-shaped plug-in terminal is lastingly tightly enclosed in the pin-shaped socket member.
- Chinese Utility Patent Publication No. CN 201038406Y discloses a power connector terminal structure including a female terminal in which a male terminal can be electrically plugged. The female terminal is composed of a main body and an outer housing. The main body is formed with a locating section, which can be fixedly disposed in a preset insulation seat body. A welding section is disposed on one side of the locating section. The welding section can extend through the insulation seat body to outer side thereof. The other side of the locating section distal from the welding section is formed with a mating section. The mating section has at least one axially extending split. In addition, an annular groove is formed on outer circumference of the mating section for the outer housing to fit thereon. A restriction section is disposed on one side of one end of the outer housing. The restriction section can be inserted in the split to provide a fixing effect for preventing the outer housing from axially rotating on the surface of the annular groove. Also, the outer housing permits the mating section to elastically expand without over-stretching. Accordingly, a true locating effect is achieved to keep a good electrical connection.
- However, in the above conventional structures, the outer circumference of the middle section of the pin-shaped socket member (or the female terminal) is formed with an annular recess (annular groove) for fitting a spring steel collar (outer housing) around the outer circumference. In practice, the conventional structures have the following shortcomings:
- 1. The outer circumference of the middle section of the pin-shaped socket member (or the female terminal) is formed with the annular recess (annular groove). In this case, the pin-shaped socket member (or the female terminal) has a complicated configuration and structure. This will increase difficulty in forming and processing the pin-shaped socket member (or the female terminal). As a result, the manufacturing cost is increased and the competitive ability is lowered due to higher price.
- 2. In design, it must be ensured that the inner circumference of the spring steel collar or the outer housing is snugly fitted on the annular recess or annular groove in dimension. Otherwise, in the case of unfitness, the holding force will be insufficient (the size of the inner circumference of the spring steel collar or the outer housing is too large) or the elastic expansion of the pin-shaped socket member or female terminal is insufficient (the size of the inner circumference of the spring steel collar or the outer housing is too small). Such requirement in dimension precision will also cause increase of manufacturing cost.
- 3. The spring steel collar (or the outer housing) is a partially split structure with a C-shaped cross section. When assembled, the split is directly fitted onto the annular recess (or the annular groove). In such assembling process, in the case that the spring steel collar (or the outer housing) itself has weaker structural strength, it is easier to expand the spring steel collar (or the outer housing) to overpass the outer circumference of the pin-shaped socket member (or female terminal) with larger outer diameter. In this case, the spring steel collar (or the outer housing) can be easily assembled on the annular recess (or annular groove). However, such spring steel collar (or the outer housing) will inevitably have poorer elasticity so that the holding force applied to the pin-shaped socket member (or the female terminal) is easy to deteriorate. Reversely, in the case that the spring steel collar (or the outer housing) has greater structural strength, then the spring steel collar (or the outer housing) will have better structural elasticity. However, under such circumstance, it will be uneasy to assemble the spring steel collar (or the outer housing) on the annular recess (or annular groove). Accordingly, in consideration of structural design, it is hard to decide whether the difficulty in assembling should be lowered or the holding force should be increased.
- It is therefore tried by the applicant to provide a plug-in wire connection terminal structure to overcome the shortcomings existing in the conventional technique.
- It is therefore a primary object of the present invention to provide a plug-in wire connection terminal structure, which has simplified structure and is easy to assemble. Therefore, the development and assembling cost for the plug-in wire connection terminal structure is lowered.
- It is a further object of the present invention to provide the above plug-in wire connection terminal structure, in which the components are easy to process and only little waste material is produced during the processing procedure. Therefore, the processing and material cost is lowered.
- It is still a further object of the present invention to provide the above plug-in wire connection terminal structure, which can provide better and more stable elastic holding effect to keep the terminal structure in good contact with another terminal mated with the terminal structure.
- To achieve the above and other objects, the plug-in wire connection terminal structure of the present invention includes: a main body having an internal receiving space, lateral sides of the receiving space being respectively formed with an arched guide slot in communication with the receiving space and a stopper block; a holding plate having a receiving section in the middle, the receiving section being positioned in the receiving space of the main body, lateral sides of the receiving section being respectively formed with a wire entrance and a conductive contact section in which an external member can be conductively plugged, a connection section being further disposed on the receiving section, the connection section extending to the arched guide slot; and a leaf spring having a bight section in the middle, the bight section being received in the arched guide slot of the main body, a connected section being disposed at one end of the bight section, the connected section being detachably latched with (or hooked with) the connection section of the holding plate, the stopper block being cooperatively engaged with the connected section, whereby the holding plate and the leaf spring are securely connected with each other without easy detachment, an abutment end being disposed at the other end of the bight section, when the leaf spring is assembled with the main body, the abutment end obliquely extending from the wire entrance of the holding plate to the receiving section, the abutment end having such a length that the abutment end is just kept in the receiving section inside a guide edge.
- In the above plug-in wire connection terminal structure, a conductive contact section extends from the holding plate. The conductive contact section is formed with a socket. An annular wall of the socket is formed with at least one slit. A fitting section is disposed at one end of the conductive contact section, which end is distal from the receiving section. The fitting section extends from outer circumference of the end of the conductive contact section. A collar section of a collar member is correspondingly fitted on the fitting section and secured to the fitting section.
- The present invention can be best understood through the following description and accompanying drawings, wherein:
-
FIG. 1 is a perspective exploded view of a first embodiment of the present invention; -
FIG. 2 is a perspective partially assembled view of the first embodiment of the present invention; -
FIG. 3 is also a perspective partially assembled view of the first embodiment of the present invention; -
FIG. 4 is a perspective assembled view of the first embodiment of the present invention; -
FIG. 5 is a sectional assembled view of the first embodiment of the present invention, showing that a wire is inserted into the terminal of the present invention; -
FIG. 6 is a sectional assembled view according toFIG. 5 , showing that a tool is extended into the terminal to release the wire; -
FIG. 7 is a sectional view showing that a plug member is plugged into the conductive contact section of the present invention; and -
FIG. 8 is a perspective exploded view of a second embodiment of the present invention. - Please refer to
FIGS. 1 to 5 . The plug-in wire connection terminal structure of the present invention includes amain body 1, a holdingplate 2, aleaf spring 3 and acollar member 4. Themain body 1 is composed of aninsulation casing 11 and aninsulation cover 12 mated with theinsulation casing 11. Theinsulation casing 11 has aninternal receiving space 13. The lateral sides of the receivingspace 13 are respectively formed with awire inlet 131 in communication with outer side, achannel 132 and aside section 14 having an archedinner face 141. Thechannel 132 communicates with the outer side via anopening 133. Astopper block 17 is disposed between theside section 14 and the receivingspace 13. One side of thestopper block 17, which side faces theside section 14, is recessed to form alocating section 171. In addition, ashift perforation 134 in communication with the outer side is disposed between theside section 14 and thewire inlet 131. Amiddle protrusion block 15 is disposed on theinsulation cover 12 in a position corresponding to the interior of theside section 14. Themiddle protrusion block 15 has an archedouter face 151 corresponding to the archedinner face 141. After theinsulation cover 12 is mated with theinsulation casing 11, anarched guide slot 16 is defined between the archedinner face 141 and the archedouter face 151. - The holding
plate 2 has a receivingsection 21 in the middle. The receivingsection 21 is positioned in the receivingspace 13 of themain body 1. The lateral sides of the receivingsection 21 are respectively formed with awire entrance 211 corresponding to thewire inlet 131 and aconductive contact section 22 received in thechannel 132. Theconductive contact section 22 is formed with asocket 221 in a position corresponding to theopening 133. Afitting section 227 is disposed at one end of theconductive contact section 22, which end is distal from the receivingsection 21. Thefitting section 227 extends from outer circumference of the end of theconductive contact section 22 in a direction away from the middle of the holdingplate 2. Thefitting section 227 has an outer diameter smaller than that of the other part of theconductive contact section 22. Anannular stopper flange 226 is disposed at one end of thefitting section 227, which end is proximal to the receivingsection 21. The annular wall of theconductive contact section 22 is further formed with at least one split 225 in communication with the outer side and aslit 222. A middle section of the slit 222 (or the split 225) is formed with anexpansion fissure 223 with a larger gap. In addition, ashoulder section 224 is formed at the junction between theexpansion fissure 223 and the slit 222 (or the split 225). The lateral side of the receivingsection 21 of the holdingplate 2 is connected with aconnection section 24 directed to thearched guide slot 16. Theconnection section 24 is abent hook section 241 formed with a receiving hollow 242. Aplane support section 243 outward extends from a lateral side of the receiving hollow 242, which lateral side is proximal to thehook section 241. In addition, one side of thewire entrance 211 of the receivingsection 21 opposite to theconnection section 24 is formed with an outward biasedguide edge 212. Awire 6 can be passed through thewire inlet 131 to extend into thewire entrance 211. Therefore, theguide edge 212 serves to guide thewire 6 into the receivingsection 21. - The
leaf spring 3 has abight section 31 in the middle. Thebight section 31 is received in thearched guide slot 16 of themain body 1. Aconnected section 32 is disposed at one end of thebight section 31. Theconnected section 32 has two protrudingabutment sections 321 formed on two sides of the end section. Aneck section 322 is formed between theabutment sections 321 and thebight section 31. Theneck section 322 has a width smaller than that of the receiving hollow 242. Theabutment sections 321 are extended into the receiving hollow 242 of the holdingplate 2 and stopped by thehook section 241. An end face of the connectedsection 32 is inlaid in thelocating section 171, whereby the holdingplate 2 and theleaf spring 3 are securely connected with each other without easy detachment. Theneck section 322 is rested on thesupport section 243, which restricts the connectedsection 32 from clockwise loosening. Moreover, thebight section 31 of theleaf spring 3 is prevented from rotating or sliding within thearched guide slot 16. Also, anabutment end 331 is connected with the other end of thebight section 31 via an obliqueelastic arm 33. The obliqueelastic arm 33 can pass through one side of theshift perforation 134 to obliquely extend toward the receivingsection 21. The obliqueelastic arm 33 has such a length that theabutment end 331 is just kept in the receivingsection 21 inside theguide edge 212. Theguide edge 212 is outward biased so as to ensure that theabutment end 331 can enter the receivingsection 21 in an insertion direction of theconductor section 61 of thewire 6 without being stopped outside. Thebight section 31 is prevented from rotating or sliding within thearched guide slot 16 so that the obliqueelastic arm 33 can be positioned in its true position. In this case, the positional relationship between theabutment end 331, the receivingsection 21 and theguide edge 212 can keep stable. - In this embodiment, the
collar member 4 is a hollow tubular body with good rigidity and elasticity. Thecollar member 4 has a collar section 41 corresponding to thefitting section 227. The annular wall of the collar section 41 is formed with at least one slit 42 in communication with the outer side. In addition, at least one locatingsection 43 is disposed on inner circumference of thecollar member 4. The locatingsection 43 protrudes from the inner circumference of thecollar member 4 toward theconductive contact section 22. One end of the locatingsection 43 is formed with atapered section 431. In addition, multiple outward expandedpush sections 44 extend from the circumference of one end of thecollar member 4. - When assembled, the
connected section 32 of theleaf spring 3 is connected with theconnection section 24 of the holdingplate 2. Then the holdingplate 2 is placed into the receivingspace 13 of themain body 1 with thebight section 31 of theleaf spring 3 positioned in thearched guide slot 16. Also, theconductive contact section 22 is positioned in thechannel 132 with thesocket 221 aligned with theopening 133. Under the help of thepush sections 44, thecollar member 4 is fitted onto the outer circumference of thefitting section 227 from the end of theconductive contact section 22, which end is distal from the receivingsection 21. The end of the locatingsection 43 with the taperedsection 431 is slid along the slit 222 (or the split 225). On one hand, thepush sections 44 facilitate forcedly pushing thecollar member 4. On the other hand, when thepush sections 44 are pushed to the position of thestopper flange 226, thecollar member 4 is stopped from sliding. Moreover, at this time, thepush sections 44 are in oblique contact with thestopper flange 226 so that a slight reaction push force is created. Under such circumstance, when the locatingsection 43 is engaged with theshoulder section 224, under the reaction push force, the locatingsection 43 is axially double engaged between thestopper flange 226 and theshoulder section 224. In this case, axial loosening between theconnected collar member 4 and the conductive contact section 22 (the fitting section 227) can be eliminated. Therefore, during the plugging/unplugging process, thecollar member 4 is prevented from loosening. Thecollar member 4 is made of a material with very good rigidity so that thecollar member 4 with theslit 42 has excellent elasticity. This can enhance the elastic holding effect of thesocket 221. - Please now refer to
FIGS. 5 to 7 . In use of the present invention, theconductor section 61 of the strippedwire 6 is passed through thewire inlet 131 and thewire entrance 211 to push the obliqueelastic arm 33 of theleaf spring 3. At this time, the obliqueelastic arm 33 is elastically biased, whereby theconductor section 61 can continuously extend into the receivingsection 21 of the holdingplate 2. The obliqueelastic arm 33 serves to abut against theconductor section 61 to provide a resistance for theconductor section 61 against reverse pullout of theconductor section 61. Under such circumstance, thewire 6 is prevented from outward loosening after assembled. A tool 5 (such as a screwdriver) can be extended into theshift perforation 134 to push and deflect the obliqueelastic arm 33 so as to release theconductor section 61. At this time, thewire 6 can be outward extracted. A pin-shapedconductive plug member 60 can be plugged into thesocket 221 of the holdingplate 2. By means of the good rigidity and elasticity of thecollar member 4, a greater elastic holding force is applied to the conductive contact section 22 (the fitting section 227), whereby theconductive contact section 22 is in good contact with theplug member 60. - In practice, the holding
plate 2 is the major conductive component for mating with the plug member. Therefore, the holdingplate 2 is made of high-conductivity material. In addition, the holdingplate 2 is coated with a silver coating with highest conductivity for more stabilizing the current. The other components such as theleaf spring 3 are made of stainless steel 301 by means of vacuum stereotyping to enhance the stability of elasticity and minimize the possibility of oxidization. Also, the holdingplate 2 and theleaf spring 3 have highly simplified configuration and structure. - Only little material needs to be cut off and few parts need to be processed. Therefore, the processing and material costs are lowered. Moreover, the
leaf spring 3 and the holdingplate 2 can be easily assembled by means of very simple steps so that the assembling cost is also lowered. Especially, the difficulty in bending process is greatly reduced so that the possibility of breakage is minimized. - Please now refer to
FIG. 8 , which is a perspective exploded view of a second embodiment of the present invention. According to this embodiment, the plug-in wire connection terminal structure of the present invention includes amain body 1, a holdingplate 2 and aleaf spring 3, which are identical to those of the first embodiment. The second embodiment further includes acollar member 40 also having acollar section 401. The annular wall of thecollar section 401 is formed with at least oneslit 402 in communication with the outer side. In addition, at least onelocating section 403 is disposed on inner circumference of thecollar member 40. The locatingsection 403 protrudes from the inner circumference of thecollar member 40. In addition, multiple raised/recessedstripes 404 are formed on outer circumference of thecollar member 40. When assembled, thestripes 404 provide the frictional force necessary for the operation, whereby thecollar member 40 can be easily pushed to assemble with the conductive contact section 22 (the fitting section 227). The connection relationship between the other parts of thecollar member 40 and the holdingplate 2 of the second embodiment is identical to that of the first embodiment. Also, the connection relationship between themain body 1, the holdingplate 2 and theleaf spring 3 is identical to that of the first embodiment and thus will not be repeatedly described hereinafter. - In conclusion, the plug-in wire connection terminal structure of the present invention has simplified components and structure and is easy to assemble. Moreover, the plug-in wire connection terminal structure of the present invention is able to provide excellent elastic holding effect.
- The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
Claims (30)
Priority Applications (1)
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US14/473,002 US9083090B2 (en) | 2011-10-12 | 2014-08-29 | Plug-in wire connection terminal structure |
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TW100136967A TW201316624A (en) | 2011-10-12 | 2011-10-12 | Improved structure of plug type connection terminal |
TW100136971A TW201316623A (en) | 2011-10-12 | 2011-10-12 | Plug connector structure of plug type connection terminal |
US13/644,449 US8851920B2 (en) | 2011-10-12 | 2012-10-04 | Plug-in wire connection terminal structure |
US14/473,002 US9083090B2 (en) | 2011-10-12 | 2014-08-29 | Plug-in wire connection terminal structure |
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US13/644,449 Continuation US8851920B2 (en) | 2011-10-12 | 2012-10-04 | Plug-in wire connection terminal structure |
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US20140370738A1 true US20140370738A1 (en) | 2014-12-18 |
US9083090B2 US9083090B2 (en) | 2015-07-14 |
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US13/644,449 Active 2033-04-06 US8851920B2 (en) | 2011-10-12 | 2012-10-04 | Plug-in wire connection terminal structure |
US14/473,002 Active US9083090B2 (en) | 2011-10-12 | 2014-08-29 | Plug-in wire connection terminal structure |
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US13/644,449 Active 2033-04-06 US8851920B2 (en) | 2011-10-12 | 2012-10-04 | Plug-in wire connection terminal structure |
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Cited By (1)
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US10361494B2 (en) * | 2016-12-19 | 2019-07-23 | Switchlab Inc. | Wire connection terminal structure |
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DE102013101408B4 (en) * | 2013-02-13 | 2021-01-14 | Wago Verwaltungsgesellschaft Mbh | Spring-loaded clamping element and connecting terminal |
DE102014105316A1 (en) * | 2014-04-14 | 2015-10-15 | Weidmüller Interface GmbH & Co. KG | Modular terminal block |
FR3025947B1 (en) * | 2014-09-16 | 2016-11-11 | Abb France | INSULATING BODY FOR DETACHABLE CONNECTOR |
CN204558667U (en) * | 2015-04-11 | 2015-08-12 | 江门市创艺电器有限公司 | A kind of terminal connector |
EP3116065B1 (en) * | 2015-07-07 | 2019-08-28 | TE Connectivity Germany GmbH | Push-in clamp retainer, push-in clamp assembly and electric connector element |
TWI605652B (en) * | 2016-05-16 | 2017-11-11 | Wire connection terminal device | |
DE102016111536A1 (en) * | 2016-06-23 | 2017-12-28 | Wago Verwaltungsgesellschaft Mbh | Contact insert of a spring-loaded connection terminal and thus formed spring-force connection terminal |
DE102016111627A1 (en) * | 2016-06-24 | 2017-12-28 | Wago Verwaltungsgesellschaft Mbh | Conductor terminal |
JP6876497B2 (en) * | 2017-04-14 | 2021-05-26 | タイコエレクトロニクスジャパン合同会社 | Electrical connector |
CN108931668B (en) * | 2017-05-22 | 2021-12-14 | 深圳市瑞能实业股份有限公司 | High-current conducting device |
DE102018109545A1 (en) | 2018-04-20 | 2019-10-24 | Phoenix Contact Gmbh & Co. Kg | Spring terminal connection and conductor terminal |
US10367271B1 (en) * | 2018-11-20 | 2019-07-30 | Dinkle Enterprise Co., Ltd. | Terminal block with lateral elastic handles |
EP4037104A1 (en) * | 2021-01-27 | 2022-08-03 | Tyco Electronics France SAS | Terminal block comprising a conductive bar with a lateral portion |
DE202023101050U1 (en) | 2023-03-06 | 2024-06-07 | WAGO Verwaltungsgesellschaft mit beschränkter Haftung | Conductor connection terminal |
CN116598802B (en) * | 2023-07-19 | 2023-11-21 | 天津轻工职业技术学院 | Wire connector for industrial robot |
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Also Published As
Publication number | Publication date |
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US8851920B2 (en) | 2014-10-07 |
US20130095697A1 (en) | 2013-04-18 |
DE102012019987B4 (en) | 2023-12-07 |
US9083090B2 (en) | 2015-07-14 |
DE102012019987A1 (en) | 2013-04-18 |
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